Toothbrush



FIG. 1 is a perspective view of a toothbrush, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is an end view when viewed from the right side of FIG. 2; and,

FIG. 7 is an end view when viewed from the left side of FIG. 2. 

The ornamental design for a toothbrush, as shown and described. 